dubrow



(No Model.)

J. H. DUBROW. INGANDBSGENT BURNER.

vlllllll mh Patented Aug UNITED STATES PATENT OFFICE.

JOHN II. DUBROIV, OF CLEVELAND, OIIIO, ASSIGNOR TO VILLIS U. MASTERS,

' OF SAME PLACE. g

INCANDESCENT BURNER.

SPECIFICATION forming part of Letters Patent N o. 589,343, dated August 31, 1897.

Application led MUCH 2 71 1 349 6' To all whom t may concern:

Be it known that I, JOHN H. DUBROW, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements Vin Incandescent Bu rners; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in burners designed to be used with a hood or mantle of mineral or earthly substances incandescent when heated-such, for instance, as the well-known Frankenstein hood, which is frequently called the VVelsbach mantle, or any of the well-known equivalents therefor; and the invention consists in the improved construction, combination, and arrangement of parts of the burner itself and of its gallery, as hereinafter fully described, and pointed out in the claims.

In the drawings, Figure l represents in side elevation and partial section a burner having its gallery, chimney, and mantle in place, the mantle being indicated by dotted lines. Fig. 2 is a central vertical section of the burner shown in Fig. l, omitting the gallery and other parts. Fig. 3 is a detached view of the diaphragm d. Fig. 4 is a top plan view of the gallery and burner-cap. Fig. 5 is a vertical sectional view of a common burner modilied in construction to adapt it to use with my improved gallery. Fig. G is aside view of a hydrocarbon-burner adapted to be used with my improved gallery, and Fig; 7 is a central sectional view of the well-known Bandceps burner so modified in construction as to be used with my improved gallery. An incandescent mantle is to be employed in each case.

In burners employing an incandescent hood or mantle the burner is itself a modification of the well-known `Bunsen burner, the liame being non-luminous, or nearly so, but intensely heating, and the light being obtained from the incandescence of the highly-heated mantle,which, as is well known, is itself an eX- ceedingly fragile article, requiring very great' care to use and not able to withstand much handling. A large part of the cost encountered in using such incandescent burners Serial No. 585.049. (No model.)

arises from the necessity for frequently replacing the mantles', and as the burners ernployed require, when good effects are to be obtained, to be frequently cleaned the removal of the mantle for that purpose, which is at present necessary,considerably increases the natural deterioration of the mantles and increases the cost of maintaining the light.

It is one of the aims of my invention to pro- 6o vide a burner at once simple, efficient, and cheap, more easily accessible than usual, more durable and efficient, and I seek to effect these ends in part by the improved construction and arrangement of the gallery and other parts and in part by the specific construction of the burner proper as distinguished from the burner as a whole.

The burner proper comprises a nipple a,

internally threaded to fit upon the gas-xture 7o c rests a diaphragm or shutter d, having per- 8o forations d2, and upon this rests an air-chamber e, the bottom e2 of which is closed and provided with perforations corresponding to those in the diaphragm cl and whose top encircles the tube c, as shown. opens at its top into a chamber fof larger diameter than tube c and closed by a perforated top g, having a deflector g2 in the form of an inverted cone, by which the flame is laterally deflected in all directions. The sides 9o and bottom of the chamber f are preferably formed of a porcelain cup h, fitting on. the tube c beneath the shoulder c3 and held in place by the collar z', screwed upon the thread c4, the perforated top'g having a depending 95 rim g3, which lits upon the porcelain cup h.

The chimney-gallery k has a downwardextending part terminating in a neck k2 of greater diameter than the chamber fand rim g3, so that it will readily pass over the same. zoo

The neck 7a2 is supported on a ledge of suitable diam eter attached to or supported on the Upon the tip b screws the tube c, per- The tube c S5 burner, preferably outside of the air-chamber e, over which thc neck k2 may iit and rest upon the diaphragm d or equivalent support.

The upper part of the gallery forms a cone or sleeve n, perforated at its lower part and surrounding the rim g3 of chamber f, from which it is separated, as by projecting lugs n2', so as to leave an annular space or openin g o' between the sleeve'n and the inclosin g walls of chamber f, through which space air ascends l combustion is very perfectly controllable, and

air is supplied to the flame from outside the chamber f in an annular jet withiuthe mautle, whereby a better incandeseence of the lower part of the mantle is secured, and by the deflector g2 the incandescence of the whole mantle is intensified and a better light is obtained from the same quantity o'f gas.

The mantle is supported over the iame in the usual way, or preferably by a rod or rods s, secured to a ring s2, seating on the gallery and carrying at top a bearing 33, through which passes the hooked rod t, to which the mantle is hung, the whole surrounded by the chimney Z. In case it is desired to use a globe or shade around the chimney suitable supports therefor, as j, may be attached to the gallery in the usual way.

By the use of the porcelain cup h for the chamberf the parts of the burner below it become much less heated in use and the adj ustment of the air-supply by the diaphragm d is feasible without disturbing the flame, whereas burners composed wholly of metal become so hot that they can not be handled until the flame has been extinguished or greatly lowered and the burner allowed to cool.

By a slight modification the ordinary Bunsen burner may be adapted to use with my improved gallery. To effect this7 I take the nipple a and perforated tube c,which together constitute a common Bunsen burner, and by adding to it, as shown in Fig. 5, my improved chamber f, comprising the parts g, h, and t, and instead of the chamber @and diaphragm d fitting upon the outside of tube c at its lower part a sleeve m, perforated to correspond with the perforations in the tube and expanded at its upper part to form the ledge m2 and rim m3, adapted to receive the neck k2 of the gallery, as indicated in dotted lines, l

I render the common burner completely adaptable to the uses of the improved burner shown in Figs. l and 2.

In Fig. G I show a hydrocarbonburner which, by providing a chamber at the top, closed by the same construction of cap and deliector as is shown in Figs. l and 2, and by adding a ledge o and guiding-lu gs p or equivalent over which the neck k2 can seat upon the ledge o, is adapted to receive my improved gallery and be used with an incandescent hood, as in the other cases.

Fig. 7 shows how, by the addition of the chamber fand the proper supporting-ledge, as q, the well-known Bandceps and other forms of burner may be used with my improved gallery and such advantages as above described obtained therefrom by providing the annular jet of air directly. around the burner and within the mantle and enabling the entire gallery, chimney, and mantle to be removed without jarring or disturbing the mantle.

. lVhat I claim as my invention, and desire to secure by Letters Patent, is-

l.' The combination of a burner-tube having an expanded chamber at top and air-inlets below, a perforated air-chamber of larger diameter, inclosing said air-inlets, a revoluble shutter or diaphragm adapted to close the perforations of said air-chamber, and a chimney-gallery seating on said shutter and having an upward-extending sleeve surrounding the upper chamber with an annular space between, substantially as described.

2. The combination ina burner of the gastube having air-inlets at its lo-wer part, a cup of `mineral material attached to the top of said tube and into which it opens, a perforated cap closing the top of said cup and for-ming a chamber, an airfchamber of larger diameter l inclosing the air-inlet of the gas-tube and perforated at its bottom, a revoluble shutter beneath the air-chamber and extending beyond the same and having corresponding perforations, and a chimney-gallery seating on said shutter outside of the air-chamber and having an upwardextending sleeve surrounding the upper chamber with an annular space between, substantially as described.

The combinati-on in a burner of the gastube having air-inlets at its lower part, a cupof mineral material attached to the top'of said tube and into which it opens, a perforated cap provided with a flame-deflectcr and closing the top of said cup and forming a chamber, an air-chamber of larger diameter inclosing the air-inlet of the vgas-tube and perforated at its bottom, a revoluble shutter beneath the air-chamber and extending beyond the same andhavin g corresponding perforations, and a chimney-gallery seating on said shutter outside of the air-chamber and having an upward-extendin g sleeve 'surrounding the upper chamber with an annular space between, substantially as described.

In testimony whereof I hereunto affix my signature in the presence of two witnesses.

JOI-IN II. DUBROIV.

In presence of JOHN R. RYDER,

LONN IRENTIss.

IOO

IIO 

